Spring + PostgreSQL + Kafka Backend for Logistics application

The Backend must be built with following services:
1) Authentication Service: using JWT with OTP based auth API integration
2) Queries loaded in SQL files as functions which should be read as JSON Array/Objects
3) Controllers covering
a) Login and Registration
b) Create, Edit & Cancel Orders
c) Invoicing
d) Get Current Location & path to location
e) List and Add additional services
4) Microservices for
a) Authentication
b) Orders
c) Invoicing
d) Location
e) Service Discovery